How many flights depart from London to Southeast Asia on average per day?

45 flights are operational daily from London to Southeast Asia as of July 2026. The most popular departure time for this route is 22:00, with 62% of flights per day taking off in the evening.

What is the cheapest airline that flies from London to Southeast Asia?

China Eastern, Shenzhen Airlines, and Emirates are the most popular carriers operating from London to Southeast Asia

How many flights depart from London to Southeast Asia on average per week?

The number of flights available between London and Southeast Asia is 321 per week as of July 2026. The most frequent departure day is Tue, with 16% of weekly flights leaving on this day.

When did momondo last update prices for flights from London to Southeast Asia?

Prices for flights from London to Southeast Asia refresh daily.

How old do you have to be to fly from London to Southeast Asia?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Southeast Asia.

What documentation or ID do you need to fly to Southeast Asia?

The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

€377 Cheap Flights from London to Southeast Asia in 2026

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Find the cheapest flights from London to Southeast Asia

Return

One-way

Last minute

Direct

Cheap return flights

Enter your travel dates to find the best prices.

21:20 - 02:15

LHR

BKK

22h 55m

1 stop

21:05 - 17:30

BKK

LHR

51h 25m

2 stops

€552China Eastern

Tue, 22 Sep - Sat, 31 Oct

21:20 - 19:50

LHR

BKK

40h 30m

3 stops

13:35 - 18:40

BKK

LHR

35h 05m

1 stop

€553China Eastern

Mon, 21 Sep - Mon, 19 Oct

12:35 - 11:15

LHR

BKK

16h 40m

1 stop

17:40 - 06:35

BKK

LHR

18h 55m

1 stop

€555XiamenAir

Fri, 25 Sep - Tue, 13 Oct

21:20 - 12:20

LHR

BKK

33h 00m

2 stops

20:50 - 18:40

BKK

LHR

51h 50m

2 stops

€559China Eastern

Tue, 22 Sep - Tue, 20 Oct

21:20 - 00:40

LHR

BKK

21h 20m

1 stop

01:55 - 17:30

BKK

LHR

22h 35m

1 stop

€563China Eastern

Fri, 2 Oct - Thu, 12 Nov

22:00 - 10:00

LHR

BKK

30h 00m

1 stop

19:10 - 16:20

BKK

LHR

28h 10m

1 stop

€575Hainan Airlines

Wed, 23 Sep - Tue, 10 Nov

12:35 - 11:15

LHR

BKK

16h 40m

1 stop

17:40 - 06:35

BKK

LHR

18h 55m

1 stop

€576XiamenAir

Fri, 18 Sep - Sat, 3 Oct

19:20 - 23:50

LHR

HKT

21h 30m

1 stop

15:30 - 06:40

HKT

LHR

22h 10m

1 stop

€675Etihad Airways

Mon, 2 Nov - Tue, 17 Nov

20:35 - 09:40

LGW

SIN

30h 05m

2 stops

08:45 - 06:40

SIN

LGW

28h 55m

3 stops

€697Multiple Airlines

Tue, 18 Aug - Mon, 7 Sep

16:55 - 01:10

LGW

SIN

25h 15m

2 stops

20:00 - 06:55

SIN

LGW

17h 55m

1 stop

€701Multiple Airlines

Sun, 23 Aug - Tue, 8 Sep

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China Eastern flights from London to Southeast Asia

Our best China Eastern deals on London to Southeast Asia flight tickets

China Eastern

22 Sept

LHR21:20London Heathrow

22h 55m

1 stop

BKK02:15Bangkok Suvarnabhumi

31 Oct

BKK21:05Bangkok Suvarnabhumi

51h 25m

2 stops

LHR17:30London Heathrow

€552

China Eastern

21 Sept

LHR21:20London Heathrow

40h 30m

3 stops

BKK19:50Bangkok Suvarnabhumi

19 Oct

BKK13:35Bangkok Suvarnabhumi

35h 05m

1 stop

LHR18:40London Heathrow

€553

China Eastern

22 Sept

LHR21:20London Heathrow

33h 00m

2 stops

BKK12:20Bangkok Suvarnabhumi

20 Oct

BKK20:50Bangkok Suvarnabhumi

51h 50m

2 stops

LHR18:40London Heathrow

€559

Gulf Air flights from London to Southeast Asia

Our best Gulf Air deals on London to Southeast Asia flight tickets

Gulf Air

23 Aug

LGW10:40London Gatwick

19h 05m

1 stop

SIN12:45Singapore Changi

8 Sept

SIN20:00Singapore Changi

17h 55m

1 stop

LGW06:55London Gatwick

€698

Gulf Air

9 Jul

LHR22:05London Heathrow

29h 40m

1 stop

BKK09:45Bangkok Suvarnabhumi

13 Jul

BKK20:15Bangkok Suvarnabhumi

25h 05m

1 stop

LHR15:20London Heathrow

€703

Gulf Air

20 Nov

LGW10:35London Gatwick

18h 15m

1 stop

SIN12:50Singapore Changi

28 Nov

SIN20:00Singapore Changi

18h 20m

1 stop

LGW06:20London Gatwick

€715

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 22/9

21:20-02:15

1 stop22h 55m

Bangkok Suvarnabhumi

Sat 31/10

21:05-17:30

2 stops51h 25m

€552

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Mon 21/9

21:20-19:50

3 stops40h 30m

Bangkok Suvarnabhumi

Mon 19/10

13:35-18:40

1 stop35h 05m

€553

Fastest return journey

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 25/9

12:35-11:15

1 stop16h 40m

Bangkok Suvarnabhumi

Tue 13/10

17:40-06:35

1 stop18h 55m

€555

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Tue 22/9

21:20-12:20

2 stops33h 00m

Bangkok Suvarnabhumi

Tue 20/10

20:50-18:40

2 stops51h 50m

€559

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 2/10

21:20-00:40

1 stop21h 20m

Bangkok Suvarnabhumi

Thu 12/11

01:55-17:30

1 stop22h 35m

€563

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Wed 23/9

22:00-10:00

1 stop30h 00m

Bangkok Suvarnabhumi

Tue 10/11

19:10-16:20

1 stop28h 10m

€575

LondonBangkok

LHR - BKK

LHRBKK

London Heathrow

Fri 18/9

12:35-11:15

1 stop16h 40m

Bangkok Suvarnabhumi

Sat 3/10

17:40-06:35

1 stop18h 55m

€576

LondonPhuket City

LHR - HKT

LHRHKT

London Heathrow

Mon 2/11

19:20-23:50

1 stop21h 30m

Phuket City

Tue 17/11

15:30-06:40

1 stop22h 10m

€675

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Tue 18/8

20:35-09:40

2 stops30h 05m

Singapore Changi

Mon 7/9

08:45-06:40

3 stops28h 55m

€697

LondonSingapore

LGW - SIN

LGWSIN

London Gatwick

Sun 23/8

16:55-01:10

2 stops25h 15m

Singapore Changi

Tue 8/9

20:00-06:55

1 stop17h 55m

€701

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from London to Southeast Asia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Southeast Asia?

The cheapest month to fly to Southeast Asia from London is in November. Flight prices, which tend to average around €719, are often lower during this time because this is during the off-season. If you’re not able to fly to Southeast Asia in November, then September is your next best option. Flight prices from London to Southeast Asia during September average around €740.

What is the cheapest day to depart on your flight to Southeast Asia?

The cheapest day to depart from London to Southeast Asia is on a Monday. Travellers who choose to depart for Southeast Asia on a Monday will often find tickets for as low as €879. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around €1,277. These prices are subject to change though, so be sure to set up a Price Alert for flights to Southeast Asia.

What is the cheapest time of day to depart on your flight to Southeast Asia?

Our most recent data shows that the best time of day to fly to Southeast Asia is in the evening. Flights from London to Southeast Asia during this time can be as low as €905. Flights to Southeast Asia are more costly in the morning, with an average ticket price of €1,166. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest London to Southeast Asia flight route?

Fly from London Heathrow to Singapore Changi for the best London - Southeast Asia flight prices

How far in advance should I book a flight from London to Southeast Asia?

You are more likely to see cheaper flights to Southeast Asia from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Southeast Asia for around €823 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Southeast Asia from London for as low as €777 on momondo.

What cabin class options are available on London to Southeast Asia flights?

There are 3 cabin classes available to choose from on London to Southeast Asia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on London to Southeast Asia flights?

No. A direct flight is the cheapest option for a flight between London to Southeast Asia.

Cheap London to Southeast Asia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Southeast Asia

Fastest flight time	11h 40m
Direct flights	Every day
Airports in Southeast Asia	294 airports

The fastest flight from London to Southeast Asia takes 11h 40m

Direct flights go from London to Southeast Asia every day.

There are 294 airports in Southeast Asia. From London there are direct flights to Bangkok Suvarnabhumi (BKK).

Search flight deals

Frequently asked questions about flying from London to Southeast Asia

When did momondo last update prices for flights from London to Southeast Asia?
Prices for flights from London to Southeast Asia refresh daily.
How old do you have to be to fly from London to Southeast Asia?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Southeast Asia.
What documentation or ID do you need to fly to Southeast Asia?
The travel and health documents you'll need for your trip to Southeast Asia may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's licence and a passport that is valid for six months after your intended arrival at Southeast Asia. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Southeast Asia?
Based on momondo bookings for flights between London and Southeast Asia, the leading plane model is Boeing 787-9 Dreamliner, making up 18.46% of the total bookings. Other popular models include Airbus A350-1000 with 14.24%, Boeing 777 with 12.56%, and Airbus A321neo with 8.38%.

Best airlines flying from London to Southeast Asia

Compare and see reviews for airlines that fly from London to Southeast Asia with momondo

Airline	Rating	Free Cancellation	Price
Air China	PriceFrom €534	Free Cancellation	Rating 7.3 158 reviews		Search Air China flights
SWISS	PriceFrom €698	Free Cancellation	Rating 7.5 1,992 reviews		Search SWISS flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Southeast Asia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Southeast Asia . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from London to Southeast Asia with flexible booking policies on momondo?

All flight searches from London to Southeast Asia on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from London to Southeast Asia?

momondo provides multiple filters to help you find the best flight to Southeast Asia from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Southeast Asia right now. Can momondo alert me if prices change?

Yes. momondo can track prices for London to Southeast Asia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.